Wheelchair frame



1.1 is a perspective view of a wheelchair frame embodying our new design as attached to an exemplary wheelchair;

1.2 is a front perspective view thereof independent of the exemplary wheelchair;

1.3 is a top perspective view thereof;

1.4 is a left side elevation view thereof;

1.5 is a right side elevation view thereof;

1.6 is a top plan view thereof; and

1.7 is a front elevation view thereof.

The broken line showing of the wheelchair is provided for the purpose of illustrating environmental structure and forms no part of the claimed design. 

CLAIM The ornamental design for a wheelchair frame, as shown and described. 